I just visited some air gun dealers site and i learned that they sell air rifles that can go up to 3000psi! I am making an air rifle that i was gonna pump with a air compressor up to 300psi. :( I thaught that 300psi was much!! Wtf?? I mean 300psi is enough to go trough 18mm plywood. Whats 3000psi gonna do??!! Go through a wall?!! Wtf? :( But is there a way for me to pump to a higher psi?? And a other thing. My air tank was this ABS pipe and i was wondering if you could get ABS pipe out of iron. Can you?? PS: I still havent learned how much fps a 300psi is.